text: /*
   * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
  #ifndef SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHADAPTIVEHEURISTICS_HPP
  #define SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHADAPTIVEHEURISTICS_HPP
  
  #include "gc/shenandoah/shenandoahHeuristics.hpp"
  #include "gc/shenandoah/shenandoahPhaseTimings.hpp"
  #include "utilities/numberSeq.hpp"
  
  class ShenandoahAdaptiveHeuristics : public ShenandoahHeuristics {
  private:
    TruncatedSeq* _cycle_gap_history;
    TruncatedSeq* _conc_mark_duration_history;
    TruncatedSeq* _conc_uprefs_duration_history;
  
  public:
    ShenandoahAdaptiveHeuristics();
  
    virtual ~ShenandoahAdaptiveHeuristics();
  
    virtual void choose_collection_set_from_regiondata(ShenandoahCollectionSet* cset,
                                                       RegionData* data, size_t size,
                                                       size_t actual_free);
  
    void record_cycle_start();
  
    virtual void record_phase_time(ShenandoahPhaseTimings::Phase phase, double secs);
  
    virtual bool should_start_gc() const;
  
    virtual bool should_start_update_refs();
  
    virtual const char* name();
  
    virtual bool is_diagnostic();
  
    virtual bool is_experimental();
  };
  
  #endif // SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHADAPTIVEHEURISTICS_HPP
  